Article
Chemistry, Physical
Zihan Xia, Hui Ding, Yan Wang, Peng Sun, Zhongfang Li, Hui Guo, Hongsen Hui, Lei Zhang
Summary: New medium-temperature proton conductors (MATMP) were synthesized using amino trimethylene phosphonic acid (ATMP) and metal ions (Fe2+, Ce4+, and Zr4+) at different molar ratios. The high phosphonic acid content in ATMP provided MATMP with good ion exchange capacity and proton conductivity. The proton conductivity of FeATMP(1:2) reached 0.124, 0.079, and 0.038 S cm(-1) at 100%, 50%, and 0 RH at 180 degrees C, respectively. MATMP exhibited excellent thermal and oxidative stability, making it promising for fuel cell technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
F. Altaf, S. Ahmed, D. Dastan, R. Batool, Z. U. Rehman, Z. Shi, M. U. Hameed, P. Bocchetta, K. Jacob
Summary: Methanol permeation is the main issue of Nafion membranes in direct methanol fuel cells. In this study, novel nanocomposite polymer membranes are prepared by integrating surface-modified sepiolite in PVDF-g-PS copolymer. The analysis shows that the prepared membranes exhibit high proton conductivity and low methanol permeability.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Nisar Ali, Farman Ali, Saboor Khan, Zeshan Ali Sheikh, Amir Said, Zahid Nawaz, Ihsanullah Ihsanullah, Muhammad Bilal
Summary: Nafion/sulfonated polyimide (SPI-x) composite membranes were fabricated by incorporating SPI with different ratios of Nafion, demonstrating improved physicochemical properties such as ion exchange capacity and thermal stability. Various analytical techniques confirmed the structure and performance of the composite membranes, with the morphology closely related to the SPI content.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Biochemistry & Molecular Biology
Matteo Di Virgilio, Andrea Basso Peressut, Angelo Pontoglio, Saverio Latorrata, Giovanni Dotelli
Summary: The combination of polybenzimidazole (PBI) and graphene oxide (GO) for membrane manufacturing is gaining popularity due to their versatility. This study proposes a simple and reproducible procedure to prepare self-assembling GO/PBI composite membranes. The composites showed a homogenous dispersion of GO and PBI and demonstrated improved thermal stability and mechanical strength compared to pure PBI. Preliminary evaluation also showed that the GO/PBI composites performed equivalently or better than state-of-the-art PBI-based materials for proton exchange membranes.
Article
Polymer Science
Prem P. Sharma, Vo Dinh Cong Tinh, Dukjoon Kim
Summary: Enhancement in ion cluster size of sulfonated poly (arylene ether sulfone) (SPAES)-based membranes was successfully achieved by encapsulating basic pendent branches as side groups, leading to improved proton conductivity and excellent chemical stability. The synthesized hybrid membrane demonstrated potential application in electrochemical and proton exchange membrane fuel cell applications with stable performance.
Article
Polymer Science
Sung Kwan Ryu, Ae Rhan Kim, Mohanraj Vinothkannan, Kyu Ha Lee, Ji Young Chu, Dong Jin Yoo
Summary: The integration of phosphotungstic acid and graphene oxide into sulfonated poly(arylene ether) resulted in a composite membrane with high thermal stability and proton conductivity, showing promising potential for PEM fuel cell applications.
Article
Engineering, Chemical
Ping-Yen Chen, Tse-Han Chiu, Fan-Jie Lin, Jyh-Chien Chen
Summary: Two novel tetraamines have been synthesized, and polybenzimidazoles with outstanding thermal stability, solubility, and oxidative stability have been prepared. The resulting membranes exhibit excellent tensile strength, proton conductivity, and peak power density, making them promising candidates for high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Sabuj Chandra Sutradhar, Sujin Yoon, Taewook Ryu, Lei Jin, Wei Zhang, Whangi Kim, Hohyoun Jang
Summary: The branched sulfonimide-based poly(phenylenebenzophenone) (SI-branched PPBP) membranes exhibit excellent proton conductivity and thermal-chemical stability, with unique dimensional stability and distinct microphase separation between hydrophobic and hydrophilic moieties. Their properties suggest the viability of SI-branched PPBP membranes as alternative materials for proton exchange membranes.
Review
Biochemistry & Molecular Biology
Junyu Chen, Jiamu Cao, Rongji Zhang, Jing Zhou, Shimin Wang, Xu Liu, Tinghe Zhang, Xinyuan Tao, Yufeng Zhang
Summary: By modifying PBI membranes in both hydrogen-air PEMFCs and DMFCs to improve proton conductivity, it is possible to address the issues of low CO tolerance of the Pt electrode catalyst and methanol permanence, thus enhancing the performance of fuel cells.
Article
Chemistry, Physical
Subir Paul, Sang-June Choi, Hee Jin Kim
Summary: The incorporation of high-proton-conductive Co-tri MOF improved the proton conductivity of Aquivion (R), resulting in an enhanced cell performance and a 66% increase in proton conductivity compared to the pristine membrane. The effect of Co-tri MOF on the structural morphology and thermal properties of the Aquivion (R) membrane was also investigated.
Article
Chemistry, Physical
Diyan ul Imaan, Fasil Qayoom Mir, Babar Ahmad
Summary: A series of proton exchange electrolytes were synthesized using a solution casting method, including polystyrene sulfonic acid (PSSA) functionalized ZWP ion exchanger and sulfonated poly(vinylidene fluoride) as base. Surface modification of the ZWP was done to obtain the PSSA-ZWP ion exchanger. The synthesized membranes showed good physicochemical properties and ion selectivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Polymer Science
Theerthagiri Senthil, Peethambaram Prabukanthan, Deivanayagam Paradesi, Kannaiyan Dinakaran
Summary: A novel hyperbranched sulfonated poly(arylene aliphatic ketones) (HB-SPAAK) loaded with titania nanoparticles was synthesized for thermally stable proton-conducting electrolyte membrane fuel cell (PEMFC) applications. The HB-SPAAKs were synthesized through polycondensation reaction using different acids and trifluromethane sulfonic acid as catalyst. The TiO2-loaded nanocomposites showed improved proton conductivity and oxidative stability compared to unmodified HB-SPAAK.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Junji Xuan, Yonglei Xin, Likun Xu, Mingshuai Guo, Lei Huang, Yihao Zhang, Yanfei Zhao, Yaoyao Liu, Longbo Li, Lili Xue, Li Li
Summary: This study investigates the feasibility of using cost-effective 304 stainless steel as bipolar plates in PEMFC and assesses its corrosion risk. The results show that an increase in fluoride ions concentration leads to the inability of SS304 to passivate spontaneously and exacerbates uniform dissolution corrosion. However, all tested samples can be electrochemically passivated and form bi-layer semiconductive passive films, meeting the corrosion criterion of DOE 2025.
Article
Chemistry, Applied
A. I. Anu Karthi Swaghatha, L. Cindrella
Summary: A novel chitosan biopolymer based solid electrolyte system consisting of surfactant-modified zeolite A was fabricated using a simple solvent-casting technique. The analysis of the materials confirmed the advantages of the composite membrane in terms of interfacial compatibility, strong interaction, and physicochemical characteristics. The results showed that the composite membrane has high proton conductivity and thermal stability, making it suitable for fuel cell applications.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Energy & Fuels
Seungbo Ryu, Bongho Lee, Jae-Hun Kim, Chanho Pak, Seung-Hyeon Moon
Summary: A pore-filling polytetrafluoroethylene (PTFE)/Nafion composite membrane has been developed for high-temperature operation of proton-exchange membrane fuel cells (PEMFC). The electrical alignment of ion channels in the through-plane direction significantly improves proton conductivity and fuel cell performance at elevated temperatures. The composite membrane demonstrates enhanced thermal stability and proton conductivity, outperforming traditional casting membranes and showing promising potential for use in high-temperature PEMFC applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Textiles
Sangeetha Dharmalingam, Omkumar Meenakshisundaram, Vijayakumar Elumalai, Rajendra S. Boopathy
Summary: This work aimed to develop a natural fiber-reinforced epoxy composite with enhanced compatibility by amino silane treatment of Luffa fiber. The amine modification of the fiber surface was confirmed through FTIR and SEM. The amine-functionalized composites showed improved thermal, mechanical, and morphological properties compared to plain epoxy composites.
JOURNAL OF NATURAL FIBERS
(2021)
Article
Biotechnology & Applied Microbiology
Vaidhegi Kugarajah, Moogambigai Sugumar, Sangeetha Dharmalingam
ENZYME AND MICROBIAL TECHNOLOGY
(2020)
Article
Engineering, Environmental
Vaidhegi Kugarajah, Sangeetha Dharmalingam
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Sangeetha Dharmalingam, Omkumar Meenakshisundaram, Vaidhegi Kugarajah
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Materials Science, Multidisciplinary
Dinesh Kumar Ravikumar, Sandeep Ragavan, Sangeetha Dharmalingam
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2020)
Article
Environmental Sciences
Felix Swamidoss Victor, Vaidhegi Kugarajah, Mohan Bangaru, Shivendu Ranjan, Sangeetha Dharmalingam
Summary: The study successfully developed a nanocomposite filter media by blending PVDF with TNT through electrospinning, which demonstrated a high bacterial filtration efficiency. Through analysis and evaluation of the nanocomposite filter media, it was found to have great potential for application in clean air management.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Biomedical
Rajalakshmi Ekambaram, Moogambigai Sugumar, Elamathi Swaminathan, Arul Princy Micheal Raj, Sangeetha Dharmalingam
Summary: The study introduces a novel electrospun polymeric nanofibrous scaffold enriched with pharmaceutical bioactive materials extracted from Morinda citrifolia for efficient skin wound healing therapy. The scaffold demonstrated excellent keratinocyte proliferation and adhesion in in vitro analysis and exhibited antibacterial efficacy. Chemical analysis revealed that the pharmaceutical components in Morinda citrifolia played an active role in promoting healing.
BIOMEDICAL MATERIALS
(2021)
Article
Chemistry, Physical
Vaidhegi Kugarajah, Moogambigai Sugumar, Elamathi Swaminathan, Nagaraj Balasubramani, Sangeetha Dharmalingam
Summary: By incorporating sulphonated zinc oxide nanorods into a sulphonated polymer, the membrane exhibits improved water uptake and ion transfer capacity, making it suitable for microbial fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Biomedical
Rajalakshmi Ekambaram, Vikas Paraman, Lokeshwar Raja, Manoj Kumar Suresh, Sangeetha Dharmalingam
Summary: This study focused on a novel approach for periodontal regeneration, utilizing zirconia nanoparticles loaded with curcumin incorporated into polymer nanofibrous scaffolds. The materials demonstrated good cyto-compatibility and antibacterial properties, showing potential for effective periodontal regeneration applications.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Vaidhegi Kugarajah, John Solomon, Kavinila Rajendran, Sangeetha Dharmalingam
Summary: This research explores the use of biocathodes with eggshell as a low-cost and efficient alternative to platinum-based catalysts in microbial fuel cells, resulting in improved electricity generation and nitrate removal. Microbial consortia analysis revealed the presence of denitrifying bacteria such as Pseudomonas, Azoarcus, Thauera, and Wolinella, contributing to better performance and indicating potential for scaling up MFCs.
PROCESS BIOCHEMISTRY
(2022)
Article
Pharmacology & Pharmacy
Rajalakshmi Ekambaram, Moogambigai Sugumar, Swetha Karuppasamy, Prabalaya Prasad, Sangeetha Dharmalingam
Summary: This study focuses on the design and development of wheatgrass-enriched nano-fibrous scaffolds for wound healing. The bio-active ingredients in wheatgrass extract showed high potential in binding to the wound healing enzyme COX-2. The synthesized nanofibrous bio-material demonstrated active properties in promoting skin wound healing.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Sangeetha Dharmalingam, Omkumar Meenakshisundaram, Felix Swamidoss Victor
Summary: This study investigates the effect of amine-functionalization of luffa fibers on the drilling characteristics of luffa/epoxy composites. The results show that the amine-functionalized composites exhibit better machinability and reduced delamination, attributed to the improved interfacial bonding and compatibility between the fiber and the polymer matrix.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Rajalakshmi Ekambaram, Saisupriyalakshmi Saravanan, Sangeetha Dharmalingam
Summary: Electro-spinnable polymeric materials combined with sulphonated poly ether ether ketone and resveratrol have been demonstrated to be an effective 2D nanomaterial for skin wound healing. The fabricated nanocomposites exhibited enhanced skin cell proliferation and adhesion, as well as a uniform nano-sized distribution. The controlled release of resveratrol showed good biocompatibility and the potential to treat wounds with bacterial infections.
BIOMEDICAL PHYSICS & ENGINEERING EXPRESS
(2022)
Article
Polymer Science
Saranya Rathinavel, Moogambigai Sugumar, Elamathi Swaminathan, Sudharshan Kubendren, Kalaimagal Samvasivan, Dharmalingam Sangeetha
Summary: Researchers synthesized nanofibrous scaffolds of polycaprolactone (PCL) incorporated with the extract of P. amboinicus for wound healing application. The fabricated nanofiber showed a well-structured, hydrophilic and antibacterial property, making it suitable for promoting wound healing.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Applied
Rajalakshmi Ekambaram, Saisupriyalakshmi Saravanan, Nishiya Selvam, Sangeetha Dharmalingam
Summary: This study reported the fabrication of novel nanofiber materials using green synthesis for combating skin cancer cells, with good antibacterial and antioxidant properties demonstrated through comprehensive characterizations. The nano-composite fibrous scaffold showed promise as an effective transdermal patch for melanoma applications.
CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS
(2021)
Article
Materials Science, Biomaterials
Christopher Igwe Idumah, I. C. Nwuzor, S. R. Odera, U. J. Timothy, U. Ngenegbo, F. A. Tanjung
Summary: This paper presents recent advancements in drug delivery applications of polymeric hydrogel nanoarchitectures and hydrogel derivatives, including the incorporation of nanoparticulates and the enhancement of the chemical, biological, electrical, and mechanical properties of hydrogels. The application of magnetically responsive and smart hydrogels as drug delivery systems is also discussed.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2024)
Article
Materials Science, Biomaterials
Remya K. Rajan, Sunitha Chandran, Annie John, Ramesh Parameswaran
Summary: This study outlines the fabrication and characterization of pamidronate (PDS) embedded nanofibrous scaffolds based on polycaprolactone/polycaprolactone-polyethyleneglycol-polycaprolactone (PCL/CEC) blends for osteoporotic bone defect management. The electrospinning technique was utilized to fabricate PDS-loaded scaffolds, and the effect of PDS on the blends was evaluated in terms of surface morphology, wettability, biodegradability, and in vitro cytocompatibility. The results showed that the PCL/CEC-PDS scaffolds had a fibroporous architecture, appropriate mechanical properties, and the ability to support cell growth, indicating their potential for managing osteoporotic bone defects.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2024)
Article
Materials Science, Biomaterials
Kubra Aydin, Handan Sevim, Hatice Kaplan Can
Summary: This study aims to develop a new dental material by designing, synthesizing, and characterizing nanocomposites, and evaluate their cytotoxic effects on human gingival fibroblasts. The results of this research will contribute to a better understanding of the properties and safety of this material, providing reference for clinical applications in dentistry.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2024)
Review
Materials Science, Biomaterials
Angelica Jimenez-Rosales, Stefani Cortes-Camargo, Pedro Estanislao Acuna-Avila
Summary: The immune response to drug-delivering systems and implanted medical devices based on biomaterials is complex, and the goal is to design biomaterials that can respond to stimuli, preserve tissue function, and optimize cellular structures. Understanding the material's structure and location, as well as the severity of damage and other factors, is crucial in developing biocompatible biomaterials.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2024)
Article
Materials Science, Biomaterials
Fatemeh Daliri Shadmehri, Ehsan Karimi, Ehsan Saburi
Summary: Bone tissue engineering utilizes polymeric scaffolds and stem cells to create a supportive matrix resembling the in vivo environment for bone repair. The study found that a composite matrix of polycaprolactone and fibrin enhanced the differentiation of adipose-derived stem cells into osteo-like cells.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2024)
